<template xlang="wxml">
	<view class="tki-tree">
		<view class="tki-tree-mask" :class="{'show':showTree}" @tap="_cancel"></view>
		<view class="tki-tree-cnt" :class="{'show':showTree}">
			<view class="tki-tree-bar">
				<view class="tki-tree-bar-cancel" :style="{'color':cancelColor}" hover-class="hover-c" @tap="_cancel">取消</view>
				<view class="tki-tree-bar-title" :style="{'color':titleColor}">{{title}}</view>
				<view class="tki-tree-bar-confirm" :style="{'color':confirmColor}" hover-class="hover-c" @tap="_confirm">确定</view>
			</view>
			<view class="tki-tree-view">
				<uni-easyinput class="ipt-ctl" type="text" v-model="queryStr" maxlength="20" placeholder="请输入排口名称" @input="handleInput"/>
				<scroll-view class="tki-tree-view-sc" :scroll-y="true">
					<block v-for="(item, index) in treeList" :key="index">
						<view :key="index" class="tki-tree-item" :style="[{
							paddingLeft: item.rank*5 + 'px',
							zIndex: item.rank*-1 +50
						}]"
						 :class="{
							border: border === true,
							show: item.show,
							last: item.lastRank,
							showchild: item.showChild,
							open: item.open,
						}">
							<view class="tk-tree-label" @tap.stop="_treeItemTap(item, index)">
								<!-- <image v-if="item.lastRank" class="tki-tree-icon" :src="''"></image>
								<image v-else-if="item.showChild" class="tki-tree-icon" :src="currentIcon"></image>
								<image v-else class="tki-tree-icon" :src="defaultIcon"></image> -->
								<image v-if="!item.lastRank"  class="tki-tree-icon" :src="item.lastRank ? lastIcon : item.showChild ? currentIcon : defaultIcon"></image>
								{{item.name}}
							</view>
							<view class="tki-tree-check" @tap.stop="_treeItemSelect(item, index)" v-if="selectParent?true:item.lastRank">
								<view class="tki-tree-check-yes" v-if="item.checked" :class="{'radio':!multiple}" :style="{'border-color':confirmColor}">
									<view class="tki-tree-check-yes-b" :style="{'background-color':confirmColor}"></view>
								</view>
								<view class="tki-tree-check-no" v-else :class="{'radio':!multiple}" :style="{'border-color':confirmColor}"></view>
							</view>
						</view>
					</block>
				</scroll-view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		name: "tki-tree",
		props: {
			range: {
				type: Array,
				default: function() {
					return []
				}
			},
			idKey: {
				type: String,
				default: 'id'
			},
			serachKey:{
				type: String,
				default: 'name'
			},
			rangeKey: {
				type: String,
				default: 'label'
			},
			title: {
				type: String,
				default: ''
			},
			multiple: { // 是否可以多选
				type: Boolean,
				default: false
				// default: true
			},
			selectParent: { //是否可以选父级
				type: Boolean,
				default: false
			},
			foldAll: { //折叠时关闭所有已经打开的子集，再次打开时需要一级一级打开
				type: Boolean,
				default: false
			},
			confirmColor: { // 确定按钮颜色
				type: String,
				default: '' // #07bb07
			},
			cancelColor: { // 取消按钮颜色
				type: String,
				default: '' // #757575
			},
			titleColor: { // 标题颜色
				type: String,
				default: '' // #757575
			},
			currentIcon: { // 展开时候的ic
				type: String,
				default: ''
			},
			defaultIcon: { // 折叠时候的ic
				type: String,
				default: ''
			},
			lastIcon: { // 没有子集的ic
				type: String,
				default: ''
			},
			border: { // 是否有分割线
				type: Boolean,
				default: false
			},
		},
		data() {
			return {
				queryStr:'',
				showTree: false,
				treeList: [],
				treeListBak: [],
				selectIndex: -1,
			}
		},
		computed: {},
		methods: {
			handleInput(){
				this._initTree()
			},
			filterTree(menuList, name){
				if(!name)return menuList
				const list1 = menuList.filter(item => {
					return item.name.indexOf(name) > -1
				})
				console.log(list1)
				return list1.map(item => {
					item = Object.assign({}, item)
					if (item.children) {
						item.children = this.filterTree(item.children, name)
					}
					return item
				})
			},
			_show() {
				this.showTree = true
			},
			_hide() {
				this.showTree = false
			},
			_cancel() {
				this._hide()
				this.$emit("cancel", '');
			},
			_confirm() {
				// 处理所选数据
				let rt = [],
					obj = {};
					// console.log(this.treeList)
				this.treeList.forEach((v, i) => {
					if (this.treeList[i].checked) {
						obj = {}
						obj = Object.assign(obj, this.treeList[i].source)
						obj.parents = this.treeList[i].parents
						
						obj = Object.assign(obj, this.treeList[i].source)
						if(this.treeList[i].parents.length==0){
							console.log(this.treeListBak)
							this.treeListBak.forEach((val, j) => {
								if(obj.id ==val.id&&val.source.level==3){
									obj.parents = val.parents
									// console.log(val.parents)
								}
							})
						}
						// 移除子元素
						delete obj.children
						rt.push(obj)
					}
				})
				this._hide()
				this.$emit("confirm", rt);
			},
			//扁平化树结构
			_renderTreeList(list = [], rank = 0, parentId = [], parents = []) {
				list.forEach(item => {
					if(item.level!==2){
						this.treeList.push({
							id: item[this.idKey],
							name: item[this.rangeKey],
							source: item,
							parentId, // 父级id数组
							parents, // 父级id数组
							rank, // 层级
							showChild: true, //子级是否显示
							open: true, //是否打开
							show: true, // 自身是否显示
							hideArr: [],
							orChecked: item.checked ? item.checked : false,
							checked: item.checked ? item.checked : false,
						})
					}
					if (Array.isArray(item.children) && item.children.length > 0) {
						// console.log(item)
						let parentid = [...parentId],
							parentArr = [...parents],
							childrenid = [...childrenid];
						delete parentArr.children
						parentid.push(item[this.idKey]);
						parentArr.push({
							[this.idKey]: item[this.idKey],
							[this.rangeKey]: item[this.rangeKey]
						})
						this._renderTreeList(item.children, rank + 1, parentid, parentArr);
					} else {
						const index = this.treeList.length - 1
						const item = this.treeList[index]
						item.lastRank = true;
						this.$set(this.treeList,index,item)
						
					}
				})
				// console.log(list)
			},
			// 处理默认选择
			_defaultSelect() {
				this.treeList.forEach((v, i) => {
					if (v.checked) {
						this.treeList.forEach((v2, i2) => {
							if (v.parentId.toString().indexOf(v2.parentId.toString()) >= 0) {
								v2.show = true
								if (v.parentId.includes(v2.id)) {
									v2.showChild = true;
									v2.open = true;
								}
							}
						})
					}
				})
			},
			// 点击
			_treeItemTap(item, index) {
				if (item.lastRank === true) {
					//点击最后一级时触发事件
					this.treeList[index].checked = !this.treeList[index].checked
					this._fixMultiple(index)
					return;
				}
				let list = this.treeList;
				let id = item.id;
				item.showChild = !item.showChild;
				item.open = item.showChild ? true : !item.open;
				if (item.showChild === false) {
					list.forEach((childItem, i) => {
						//隐藏所有子级
						if (!childItem.parentId.includes(id)) {
							return;
						}
						if (!this.foldAll) {
							if (childItem.lastRank !== true && !childItem.open) {
								childItem.showChild = false;
							}
							// 为隐藏的内容添加一个标记
							if (childItem.show) {
								childItem.hideArr[item.rank] = id
							}
						} else {
							if (childItem.lastRank !== true) {
								childItem.showChild = false;
							}
						}
						childItem.show = false;
					})
				} else {
					list.forEach((childItem, i) => {
						// 打开子集
						if (childItem.parentId[0] === id) {
							childItem.show = true;
						}
					})
				}
				// console.log(this.treeList)
			},
			_treeItemSelect(item, index) {
				this.treeList[index].checked = !this.treeList[index].checked
				this._fixMultiple(index)
			},
			// 处理单选多选
			_fixMultiple(index) {
				if (!this.multiple) {
					// 如果是单选
					this.treeList.forEach((v, i) => {
						if (i != index) {
							this.treeList[i].checked = false
						} else {
							this.treeList[i].checked = true
						}
					})
				}
			},
			// 重置数据
			_reTreeList() {
				this.treeList.forEach((v, i) => {
					this.treeList[i].checked = v.orChecked
				})
			},
			_initTree(range = this.range){
				// 过滤
				// const res = this.useListRecordToTreeByKeywords(this.range,this.queryStr)
				var newarr = []
				function render (arr, newarr,queryStr) {
					let i = 0
					let len = arr.length
					for (;i < len; i++) {
					  if (arr[i].name.indexOf(queryStr) !== -1&&arr[i].level==3){
						newarr.push(arr[i])
					  }
					  if (arr[i].children && arr[i].children.length > 0) {
						render(arr[i].children, newarr,queryStr)
					  }
					}
					return newarr
				  }
				  if(this.queryStr){
					render(range,newarr,this.queryStr)
				  }else{
					  newarr = range
				  }
				console.log(newarr)
				this.treeList = [];
				this._renderTreeList(newarr);
				if(!this.queryStr){
					this.treeListBak = []
					this.treeListBak.push(...this.treeList)
				}
				this.$nextTick(() => {
					this._defaultSelect(newarr)
				})
			}
		},
		watch: {
			range(list) {
				this._initTree(list);
			},
			multiple() {
				if (this.range.length) {
					this._reTreeList();
				}
			},
			selectParent() {
				if (this.range.length) {
					this._reTreeList();
				}
			},
		},
		mounted() {
			this._initTree();
		}
	}
</script>

<style scoped>
	@import "./style.css";
</style>
